Esper

Esper is a language, compiler and runtime for complex event processing (CEP) and streaming analytics, available for Java as well as for .NET.

Free software · espertech.com

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What Esper’s own pages say

What it says it doesEsper is a language, compiler and runtime for complex event processing (CEP) and streaming analytics, available for Java as well as for .NET. espertech.com
Platforms.NET, Java espertech.com
IntegrationsApache Kafka, Apache Zookeeper espertech.com

Each value is a quote AirStack found on the product’s own pages, read 2026-11-05. A missing field means AirStack has not found it on its pages.